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science chapter 6
volcanos.
17
Science
6th Grade
02/05/2012

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Term
basin
Definition
a broad bowl shaped valley.
Term
magma
Definition
is a molten mixture of rock forming substances, gases and water from the mantle
Term
lava
Definition
when magma reaches the surface and then it turns into....?
Term
dormant
Definition
volcano to awaken in the future and become active
Term
extinct
Definition
dead or not awakend also unlikely to erupt again
Term
active
Definition
live volcano that is erupting or is showing signs that it may erupt soon
Term
lava plateau
Definition
made up of many layers of thin runny lava that erupts from lon cracks in the ground.
Term
caldera
Definition
a huge hole left by a collapse of a volcano
Term
batholith
Definition
mass of rock formed when a large body of magma cools inside.
Term
volcanic neck
Definition
this forms when magma hardens
Term
dike
Definition
magama that forces itself across rock layers.
Term
pyroclastic flow
Definition
type of a explosive eruption that hurls out a mixture of gas, bomb,an cinders.
Term
ring of fire
Definition
formed by many volcanoes that rim the pacific ocean
Term
geyser
Definition
a fountian of water and stream that erupts from the ground
Term
basin
Definition
broad bowl shape valley
Term
island arch
Definition
string of islands
Term
volcano
Definition
weak spot in the crust where magma comes to the surface.
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